Reflex zoom lens having aperture scale

Abstract

A reflex zoom lens assembly includes a reflection optical system in which the full-aperture F number varies with focal length. A zoom ring of the assembly includes an aperture scale correlated to the focal length.

What is claimed is: 
     
       1. A reflex zoom lens, comprising in combination, a reflection-type optical system in which the full-aperture F number changes with focal length, an aperture scale including aperture indications, and a focal length scale including focal length indications, said aperture scale and said focal length scale being fixed relative to one another whereby said focal length indications and said aperture indications are fixedly juxtaposed. 
     
     
       2. A reflex zoom lens, as claimed in claim 1, in which said aperture scale is formed on a zoom ring of a lens barrel. 
     
     
       3. A reflex zoom lens, as claimed in claim 1, including a zoom ring having an operating part, respective sides of said part being provided with said aperture scale and said focal length scale, respectively. 
     
     
       4. A reflex zoom lens, as claimed in claim 1, and including a zoom ring, said focal length scale and said aperture scale being formed on one side of said zoom ring. 
     
     
       5. A reflex zoom lens, as claimed in claim 1, said aperture scale being positioned on a zoom ring of said lens in a manner such that said aperture scale is observable through an aperture scale confirming window provided on a camera body, when said lens is attached to said camera body. 
     
     
       6. A reflex zoom lens, as claimed in claim 1, in which said aperture scale is formed on a stationary ring of said lens. 
     
     
       7. A camera assembly, comprising; a reflex zoom lens including a reflection optical system in which the full-aperture F number changes with focal length, a zoom ring, and an aperture scale formed on said zoom ring, a camera body mounting said lens, said body including viewing means by which said aperture scale may be observed. 
     
     
       8. A reflex zoom lens, comprising; a reflection-type optical system in which the full-aperture F number changes with focal length, a zoom ring, and an aperture scale including aperture indications fixedly formed on said zoom ring.